ICALEO 2013 Paper #N202 (Sub-Wavelength Patterning of Self-Assembled Organic Monolayers Via Non-Collinear Optical Parametric Amplifier)

Sub-Wavelength Patterning of Self-Assembled Organic Monolayers Via Non-Collinear Optical Parametric Amplifier
Authors:
Andreas Aumann, Ruhr-Universitaet Bochum; Bochum Germany
Stella Maragkaki, Ruhr-UniversitäT Bochum; Bochum Germany
Benjamin Schops, Ruhr-UniversitäT Bochum; Bochum Germany
Andreas Ostendorf, Ruhr-UniversitäT Bochum; Bochum Germany
Florian Schulz, UniversitäT Duisburg-Essen; Essen Germany
Anja Schroter, UniversitäT Duisburg-Essen; Essen Germany
Steffen Franzka, UniversitäT Duisburg-Essen; Essen Germany
Nils Hartmann, UniversitäT Duisburg-Essen; Essen Germany
Presented at ICALEO 2013

ICALEO 2013 Paper #N103 (Synthesis of gallium nitride nanoplates using laser-assisted metal organic chemical vapor deposition)

Synthesis of gallium nitride nanoplates using laser-assisted metal organic chemical vapor deposition
Authors:
H.R. Golgir, University of Nebraska-Lincoln; Lincoln NE
P Thirugnanam, University of Nebraska-Lincoln; Lincoln NE
Y.S. Zhou, University of Nebraska-Lincoln; Lincoln NE
Y. Gao, University of Nebraska-Lincoln; Lincoln NE
Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
Presented at ICALEO 2013

The m-plane oriented gallium nitride (GaN) nanoplates were successfully grown on silicon (Si) substrates using laser-assisted metal organic chemical vapor deposition (L-MOCVD). The morphology and orientation of the nanoplates we...

ICALEO 2013 Paper #N102 (Laser Assisted Production of Calcium Phosphate Nanoparticles from Marine Origin)

Laser Assisted Production of Calcium Phosphate Nanoparticles from Marine Origin
Authors:
Juan Pou, University of Vigo; Vigo Spain
Mohamed Boutinguiza, University of Vigo; Vigo
Jesus Del Val, University of Vigo; Vigo Spain
Antonio Riveiro, University of Vigo; Vigo Spain
Rafael Comesana, University of Vigo; Vigo Spain
Fernando Lusquinos, University of Vigo; Vigo Spain
Presented at ICALEO 2013

The first calcium phosphate based biomaterials were introduced in the market almost forty years ago and, due to the compositional resemblance with the mineral constituents of bones and teeth, they became extensively employed in biomedical app...

ICALEO 2013 Paper #M906 (Laser Patterning of Thin Film Strain Gauges)

Laser Patterning of Thin Film Strain Gauges
Authors:
Oliver Suttmann, Laser Zentrum Hannover e.V.; Hannover USA
Jan F. Duesing, Laser Zentrum Hannover e.V.; Hannover Germany
Juergen Koch, Laser Zentrum Hannover e.V.; Hannover Germany
Ludger Overmeyer, Laser Zentrum Hannover e.V.; Hannover Germany
Presented at ICALEO 2013

Current trends of intelligent products and controlled processes show an increasing need for long-living sensors. Metal thin-film strain gauges are suitable for monitoring mechanical loads over the entire lifetime of a component. However, existing manufacturing methods can only pattern these gauges on flat components and in large quantities...

ICALEO 2013 Paper #M903 (Experimental and Numerical Investigation on Short Pulsed Laser Welding of Stainless Steel Foils)

Experimental and Numerical Investigation on Short Pulsed Laser Welding of Stainless Steel Foils
Authors:
Hui-chi Chen, Singapore Institute of Manufacturing Technology; Singapore Singapore
Presented at ICALEO 2013

Today, there is a miniaturization trend in ultra-precision laser micro-welding applications. It is due to industrial products or components are being made smaller to save space or reduce energy consumptions. For example, laser hermetic sealing of implantable devices, microwave enclosures, batteries, sensors, etc. Since these devices are generally heat-sensitive, a proper control of energy input is necessary in order to avoid any heat damage. Laser micro-welding by pulsed laser systems ...

ICALEO 2013 Paper #M902 (3D Finite Element Modeling of Laser-Assisted Maskless Micro-Deposition)

3D Finite Element Modeling of Laser-Assisted Maskless Micro-Deposition
Authors:
Ehsan Toyserkani, University of Waterloo; Waterloo ON Canada
Amir Azhari, University of Waterloo; Waterloo ON Canada
Elahe Jabari, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2013

The manuscript will address a 3D finite element modeling of a laser-assisted maskless micro-deposition process (aka micro laser sintering/cladding) where it is utilized in the production of micro-tracks composed of silver nano-particles. The model is established through a coupled heat conduction equation with strain/stress constitutive physics in the presence of a moving continuous or pulsed las...

ICALEO 2013 Paper #M808 (Temperature Profile in Thin Wires during Laser Heating.)

Temperature Profile in Thin Wires during Laser Heating.
Authors:
Thiwanka Wickramasooriya, Laser-Advanced Manufacturing, Materials and Micro-Processing Laboratory; Orlando FL USA
Aravinda Kar, Laser-Advanced Manufacturing, Materials and Micro-Processing Laboratory; Orlando FL USA
Raj Vaidyanathan, Advanced Materials Processing and Analysis Center; Orlando FL USA
Presented at ICALEO 2013

The temperature distribution in a moving thin wire heated by a rectangular profile laser beam is studied. The output Gaussian profile beam of a laser system is transformed to a rectangular profile beam and the corresponding laser irradiance is integrated in the transverse direction to o...

ICALEO 2013 Paper #M807 (Processing Various Sensible High-Tech Materials with Short and Ultra-Short Pulsed Disc Laser Sources)

Processing Various Sensible High-Tech Materials with Short and Ultra-Short Pulsed Disc Laser Sources
Authors:
Markus Roehner, Jenoptik Laser GmbH; Jena Germany
Susanna Friedel, Jenoptik Laser Gmbh; Jena Germany
Bert Kremser, Jenotik Laser GmbH; Jena Germany
Klaus Stolberg, Jenoptik Laser Gmbh; Jena Germany
Ewa Ziolkowski, Jenotik Laser GmbH; Jena Germany
Presented at ICALEO 2013

This presentation gives a brief overview about new applications with high power disc lasers in the ns- and fs-range.

Ultra-short-pulsed lasers become more and more important in the recent years. Due to their huge peak power in combination with the ultra short pulse...

ICALEO 2013 Paper #M805 (Robusteness of the Laser Melting Process)

Robusteness of the Laser Melting Process
Authors:
Heiko Bruening, Bias - Bremer Institut Fuer Angewandte Strahltechnik Gmbh; Bremen Germany
Presented at ICALEO 2013

The use of laser technologies in material processing is wide spread in various manufacturing chains such as welding, brazing and cutting. Compared to other heat sources, the laser beam enables the allocation of a certain amount of energy in a specific time on a very small spot. For this reason, the laser especially is a suitable tool for material processing in micro range. Due to the fact that processes in micro range are rather influenced by forces related to the surface of the work piece than by forces related to their volume, a p...

ICALEO 2013 Paper #M708 (Structural Changes in Single-Walled Carbon Nanotubes Induced by Pulsed Laser Irradiation)

Structural Changes in Single-Walled Carbon Nanotubes Induced by Pulsed Laser Irradiation
Authors:
Jeonghong Ha, POSTECH; POHANG South Korea
Dongsik Kim, POSTECH; Pohang South Korea
Presented at ICALEO 2013

Carbon nanotubes (CNTs) have great electrical, mechanical and thermal properties compared to conventional materials. However, the naturally-bundled structure, lattice imperfections and impurities seriously limit their engineering applications. There have been attempts to use laser beams to remove the imperfections and impurities but the interaction between high-power laser pulses and CNT structures is still vaguely understood. In this work, the structural changes in single-walled...